What can be done to assure this doesn't happen again. Can charges be pressed on her as well?

It is actually a crime for someone to make a false CPS report. But, good luck getting a DA to prosecute the case.

Keeping CPS callers anonymous is a state policy. We want to encourage people to speak out if they see some type of child abuse. The negative effect is that some people may use this knowledge to try to gain litigation advantage over a co-parent. The Department of Family and Protective Services (DFPS) knows this and while we don't know who calls in, DFPS does know and they do take note. If DFPS is investigating a call at your house then you need to seriously consider hiring counsel to represent you. DFPS cases request the court to take serious steps in litigation that can have long and harmful results on you and your family.

Once you are clear of CPS, you may be able to bring an injunction action (protective order) to keep her from harassing you. The short answer, though, is that there is no real protection from false child abuse allegations. There can be consequences after the fact since the false report is a crime.